# Help in basic cuircit analys

Discussion in 'Homework Help' started by Bashar001, Jan 25, 2015.

## How do i solve the rest of it? how should i think?

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1. ### Bashar001 Thread Starter New Member

Jan 25, 2015
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Hello! Iam studying electrical engneer and i have a problem with this question.

I dont know wich currents are going throw VB

2. ### Bashar001 Thread Starter New Member

Jan 25, 2015
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psst (sorry for my english9

3. ### shteii01 AAC Fanatic!

Feb 19, 2010
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Using your system, the current at VB is: I5+I3=I4.
I5 and I3 enter Bode B, I4 exits Node B.

4. ### Bashar001 Thread Starter New Member

Jan 25, 2015
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Okej thanks, but i dont know what to do with the rest of it...

Thanks for help

5. ### WBahn Moderator

Mar 31, 2012
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It's really hard to tell you much about equations that have a bunch of ... in them.

If you are at the point where you are doing AC analysis with complex impedances, then you should be well past the point of being proficient at basic circuit analysis.

So choose an analysis method (as near as I can tell, it appears you are tying to use Node Voltage Analysis, which is a very reasonable choice) and then set up your equations (and without a bunch of ... in them!). Let's see those and get those correct. After that it is simply math.

And what's with the Poll?

6. ### shteii01 AAC Fanatic!

Feb 19, 2010
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Also I don't like most of your I equations (I1, I2, I3, I4, I5).

7. ### Bashar001 Thread Starter New Member

Jan 25, 2015
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Hello agian.

What i mean by "...." that i dont know what should be there and i dont know what is the answer, but i know how the equation will be. I have to use current method because its my homework, its a simple math i know but i am not good at it. I dont know what to do anymore and i have to hand this . My problem is that i study at home (distance eduqation) and teachers doesnt help because they "dont have time" wich sucks and i only have youtube and my books..... but i appriciate your help so far

8. ### WBahn Moderator

Mar 31, 2012
18,087
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What do you mean by "current method". Mesh Current Analysis? Or Node Voltage Analysis (which is just a dressed up Kirchoff's Current Law)? Branch Current?

What I meant by "after that it is simply math" is that setting up the equations up front is where all of the EE stuff is. Once those are done correctly, everything after that only involves math, there's no more EE involved. Doing the EE up front let's you focus on the EE principles without getting too caught up in the math. Doing the bulk of the math at the back end let's you focus on doing the math right without getting caught up in worrying about the EE stuff. Doing both at the same time greatly increases the odds of messing up one or the other because your attention is split.

9. ### Bashar001 Thread Starter New Member

Jan 25, 2015
5
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Yeah i meant node voltage analysis, thats what iam bad with. Could u create a file that you discribe how things should be from the circuit in the picture? so i can understand it better

10. ### WBahn Moderator

Mar 31, 2012
18,087
4,917
No, I'm not going to do your homework for you.